WHOLE ANALYSIS APPROACH FOR RESIDUE TIME DISTRIBUTION CURVE IN MULTI-STRAND CONTINUOUS CASTING TUNDISH

LEI Hong; DIAO Yan; PAO Jia-Lin; LIU Zhang-Jun; CHEN Hai-Geng; SHI Ji-Cheng

doi:10.3724/SP.J.1037.2010.00220

Acta Metall Sin >

2010 , Vol. 46 >Issue 9: 1109 - 1114

DOI: https://doi.org/10.3724/SP.J.1037.2010.00220

论文

WHOLE ANALYSIS APPROACH FOR RESIDUE TIME DISTRIBUTION CURVE IN MULTI-STRAND CONTINUOUS CASTING TUNDISH

LEI Hong ,
DIAO Yan ,
PAO Jia-Lin ,
LIU Zhang-Jun ,
CHEN Hai-Geng ,
SHI Ji-Cheng

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1) Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819
2) School of Materials and Metallurgy, Northeastern University, Shenyang 110819

Received date: 2010-05-10

Revised date: 2010-07-06

Online published: 2010-09-11

Supported by

Supported by National High-Tech R&D Program of China (No.2009AA03Z530), National Natural Science Foundation of China and Shanghai Baosteel (No.50834010)

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Abstract

The study of residue time distribution (RTD) curve is usually one of the effective methods to estimate the flow characteristics in the continuous casting tundish. In the past, the analysis model for RTD curve of one-strand is usually applied to estimate the individual strand data in multi-strand tundish, but the result obtained by such a model can not agree with the physical fact sometimes. In this paper, an analysis model is proposed to analyze flow characteristics in multi-strand tundish. First, the whole RTD curve of multi-strand tundish is obtained by the individual strand data. Second, classic analysis model is applied to analyze the whole RTD curve of multi-strand tundish. Third, average residence time is chosen as a key parameter to estimate the similarity of flow characteristics of each strand in the multi-strand tundish. Such an analysis approach can avoid the occurrence of the negative dead zone. And the volume ratio of dead zone satisfies the physical facts.

Key words： continuous casting; multi-strand tundish; whole residue time distribution (RTD); flow characterization; RTD curve

Cite this article

LEI Hong , DIAO Yan , PAO Jia-Lin , LIU Zhang-Jun , CHEN Hai-Geng , SHI Ji-Cheng . WHOLE ANALYSIS APPROACH FOR RESIDUE TIME DISTRIBUTION CURVE IN MULTI-STRAND CONTINUOUS CASTING TUNDISH[J]. Acta Metall Sin, 2010 , 46(9) : 1109 -1114 . DOI: 10.3724/SP.J.1037.2010.00220

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